What is the output of the following code? import java.lang.Math. class Main public static void main(String args[]) System.out.println(Math. round(-7.5)); System.out.println(Math.abs (-7.5)): System.out.println(Math.ceil(-7.5)); System.out.println(Math.floor (-7.5)); a. -7 7.5-7.0-8.0 b. -8 7.5 -7.0-8.0 c. -8-7-8.0-7.0 d -77-7.0-8.0